126 tARID^. 



31 . Sterna lorata. 



Sterna exilis * {nee Tsch.), Scl. P. Z. S. 18G7, p. 336 & p. 344 ; Scl. et 

 Salv. P. Z. S. 1871, p. 572 (revision) ; iid. op. cit. 1873, p. 147 ; 

 iid. Nomencl. Ao. Neotr. p. 147 (1873) ; Saunders, P. Z. S. 1876, 

 p. 663 (revision) ; id. op. cit. 1882, p. 552 (Peru) ; Tacz. Orn. Perou, 

 iii. p. 445 (1886) ; MacFarl. Ibis, 1887, p. 204 (Callao Bay) ; Ber- 

 lepsch ^ Stolzm. P. Z. S. 1892, p. 400. 



Sterna lorata, Phil, et Landb. Wiegm. Arch. 1863, pt. i. p. 124. 



Sterna loricata, Gray, Hand-l. B. iii. p. 121, no. 11068 (1871: ex 

 Ph. Si- Landb.). 



Adult in hreeding -plumage. Forehead, and as far as the middle 

 ■if the eyebrow, white ; upper loral streak black, rather narrow, 

 l)elow which a parallel whitish streak along the cheeks ; crown and 

 aape black ; mantle slate-grey ; primaries with white shafts, the 

 outer web of the outermost primary black, a smoke-grey line next 

 the shaft on the inner web, and similar lines of a greyer colour on 

 the succeeding primaries, inner portion of inner webs white ; rump 

 and tail-feathers slate-grey, the streamers paler ; vent, flanks, 

 abdomen, and breast smoke-grey, passing into white on the throat 

 and chin ; under wing-coverts white : bill ver}' slender and pro- 

 longed in front of the angle of the genys, greenish yellow at the base, 

 blackish anteriorly ; tarsi and toes brownish, small, delicate, and the 

 web between the middle and inner toe considerably indented. Total 

 length y-6 inches, culmen 1-45, wing 7"3, tail 4-1, depth of fork 2-2, 

 tarsus 0"55, middle toe with claw 0-75. 



Adidt in winter. Like the above, with a little mottling of white 

 about the lores and forehead. 



Immature and young unknown to me. 



Hah. Coast of Peru and of Northern Chile. Breeding-habits 

 unknown. 



a, b. S ad. sk. Callao Bay, Peru, Aug. {Commr. II. Saunders Coll. 



MacFarlane, R.N.). 



c, d. Ad. sk. Paracas Bay, Peru, Oct. {Adml. II. Saunders Coll. 



A. H. Markham). 



e. Ad. sk. Coast near Lima ( W. l^ation). Salvin-Godman Coll. 



/. Ad. St. Chile. Salvin-CTodman CoU. 



32. Sterna melananchen. 



Sterna melanauchen, Temm. PL Col. v. livr. 72, pi. 427 (1827) ; 

 Lesson, Man. cCOrn. ii. p. 382 (1828 : Moluccas) ; id. Traite, p. 622 

 (1831) ; Gray, List B. Brit. Mus., Anseres, p. 179 (1844 : Java) ; 

 Gray, Gen. B. iii. p. 659 (1846) ; Bhjth, J. A. S. B. xv. p. 373 

 (1846: Nicobar Is.); Gordd, B. Austral, vii. pi. 28 (1848); 

 Reichenh. Natat. tab. xx. fig. 282 (1848) ; id. torn, cit., Novit. vii. 

 tab. 270. figs. 2255-6 (1850) ; id. Voff. Neuholl. Bd. ii. p. 9 & p. 346 

 (1850) ; /. Macgilliv. Narr. Voij. Rattlesn. ii. p. 358 (1852) ; 

 Licht. iSfomenel. Av. p. 98 (1854 : Sumatra) ; Schl, Handl. Dierh. 

 tab. viii. fig. 102 (1857) ; Gray, P. Z. S. 1858, p. 198 ; id. op. cit. 



* As mentioned {supra p. 21). the Sterna exilis of Tsehudi in the Neuchatel 

 Museum proved on examination to be a young Hi/drochelklon surinamensis. 



